Effect of a Scale?Aware Convective Parameterization Scheme on the Simulation of Convective Cells?Related Heavy Rainfall in South Korea

In this study, the effect of a scale-aware convective parameterization scheme (CPS) on simulation heavy precipitation in gray-zone was investigated using Weather Research and Forecasting (WRF) model. We performed WRF simulations with Kain–Fritsch (KF) (non-scale-aware), Multiscale (MSKF) (scale-aware), explicit convection (i.e., no CPS). The MSKF uses parameter that modulates available potential energy (CAPE) timescale entrainment process KF as function horizontal grid spacing. results study show explicitly resolved lead to overestimations erroneous locations because atmospheric instability cannot be appropriately triggered reduced. CPS without scale-awareness exaggerates distorts synoptic fields, leading at high resolution. improves cells-related rainfall by removing gray-zone, reducing role CPS, increasing microphysics (MPS) decreasing addition, sensitivity experiments CAPE leads faster development cells, whereas overestimation. modulated parameters play crucial balancing effects MPS gray-zone.